Table S1. List of the taxa identified in this study. Boring (BOR), Cup (CUP),
Encrusting algae (ENA), Encrusting (ENC), Massive (MAS), Pedunculated (PEN), Tree
(TREE).
Growth
Form
Carall Bernat
Tascó Petit
Medallot
Punta Salines
Flabellia petiolata
PEN
+
+
+
+
Halimeda tuna
PEN
-
-
+
-
Palmophyllum crassum
ENA
+
-
+
-
ENC-MAS
+
-
+
-
Lithophyllum stictaeforme*
ENA
+
+
+
+
Mesophyllum alternans *
ENA
+
+
+
+
Peyssonnelia sp.*
ENA
+
+
+
+
Acanthella acuta*
MAS
+
+
+
+
Agelas oroides*
MAS
+
+
+
+
Axinella damicornis*
MAS
+
+
+
+
Cacospongia sp.
MAS
+
+
+
-
Chondrosia reniformis*
MAS
+
+
+
+
Clathrina clathrus*
MAS
+
+
+
-
Cliona sp.*
BOR
+
+
+
+
Corticium candelabrum*
MAS
+
+
+
+
Crambe crambe*
ENC
+
+
+
+
Crella (Grayella) pulvinar*
ENC
+
+
+
+
Dendroxea lenis
ENC
+
-
-
-
Dictyonella sp.
ENC-MAS
+
+
+
+
Dysidea avara*
ENC
+
+
+
+
Fasciospongia cavernosa
ENC
+
+
+
-
Haliclona (Halichoclona) fulva
ENC
-
+
+
-
Haliclona (Soestella) mucosa
ENC
+
+
+
-
Haliclona sp.
ENC
-
+
+
-
Hemimycale columella*
ENC
+
+
+
+
Hexadella racovitzai*
ENC
+
+
+
+
Taxa
Chlorophyta
Valonia macrophysa
Rhodophyta
Porifera
Ircinia oros*
MAS
+
+
+
-
Ircinia fasciculata
MAS
-
-
+
-
Ircinia variabilis
MAS
+
+
+
+
Oscarella sp.*
MAS
+
+
+
-
Petrosia ficiformis*
MAS
+
+
+
+
Phorbas tenacior*
ENC
+
+
+
+
Phorbas topsenti
ENC
-
-
+
-
Pleraplysilla spinifera*
ENC
+
+
+
+
Prosuberites longispinus
ENC
+
+
+
-
Raspaciona aculeata
ENC
+
+
-
+
Spirastrella cunctatrix*
ENC
+
+
+
+
Spongia (Spongia) officinalis
MAS
+
+
-
-
Spongia virgultosa
MAS
+
-
+
-
Terpios granulosa
ENC
+
+
-
-
Alcyonium acaule*
MAS
+
+
+
+
Alcyonium coralloides
ENC
+
+
+
+
Caryophyllia inornata*
CUP
+
+
+
+
Corallium rubrum
TREE
-
+
-
-
Hoplangia durotrix
CUP
+
+
-
-
Leptopsammia pruvoti*
CUP
+
+
+
+
Paramuricea clavata*
TREE
+
+
+
+
Parazoanthus axinellae*
ENC
+
+
+
+
Filograna implexa / Salmacina dysteri*
TREE
+
+
+
+
Protula sp./ Serpula vermicularis
ENC
+
+
+
-
Serpulidae
ENC
+
+
+
-
Adeonella calveti/Smittina cervicornis*
TREE
+
+
+
+
Beania magellanica
ENC
-
+
+
-
Chartella tenella
TREE
-
+
+
+
Margaretta cereoides
TREE
-
-
+
-
Myriapora truncata*
TREE
+
+
+
+
Pentapora fascialis
TREE
-
-
+
-
Reteporella grimaldii*
TREE
-
+
+
+
Anthozoa
Polychaeta
Bryozoa
Schizomavella sp.
ENC
+
+
+
+
Turbicellepora sp.
TREE
+
+
+
-
Cystodytes dellechiajei*
ENC
+
+
+
+
Didemnum sp.1
ENC
+
-
+
-
Didemnum sp. 2
ENC
+
-
+
-
MASS
+
+
+
+
Tunicata
Halocynthia papillosa*
* taxa accounted for 90% of the SIMPER analysis